Nut-lock



W. S. MITCHELL.

Nut-Lock.

Patented May 18, 1880.

WITNESSES:

ATTORNEYS.

J'ETERS, PHOTmLrrHoGRAPnER, wasnmewn n c UNITED STATES PATENT OFFICE.

WILLIAM S. MITCHELL, OF NEW CUMBERLAND, OHIO.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 227,810, dated May 18, 1880.

Application filed February 17, 1880.

Similar letters of reference indicate corre sponding parts.

This invention belongs to that class of inventions that have for their object the securing of nuts on railroad-tracks, bridges, and machinery, 850. v

The invention consists of hinged lock-plates provided with beveled sockets to fit over the nuts, said lock-plates having their free ends locked together by lock and key.

In the drawings, A represents the fish-plate B B, the bolts passing through the fish-plates; G G the nuts on said bolts. D D are the hinges, which hinge the'lock-plates E E to the fishplate A, and said lock-plates E E are provided with beveled or conical sockets a a,'that fit over the nuts 0, and thereby prevent their turning.

Fastened upon the face of the fish-plate A G is a lock operated by the key H, which lock G is fixed in the inner end of one of the lock-plates E, while its bolt may be thrown by the key H through an opening in the plate F and into the socket f in the end of the opposite lock-plate, so that the said lock-plates, locking the nuts, can be themselves locked securely in position.

In order to remove or turn the nuts 0 G at any time the said lock-plates E E can be unlocked from each other and thrown back upon their hinges.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The combination, with the plate F, secured to the fish-plate A, of the lock-plates E E, provided with sockets, as described, hinged to the said plate A, and secured in position by lock and key, substantially as herein shown and described.

WILLIAM SHAKESPERE MITCHELL.

Witnesses WILLIAM W. Tenor, J OHN D. WEAVER. 

